Knockdown garbage receptacle mold



Feb. 14, 1933. H. F. slr-:LAFF 1,897,340

KNOCKDOWN GARBAGE RECEPTACLE MOLD Filed June 8, 1928 2 Sheets-Sheet lNVENTOR ATTORNEY ATTORNEY 2 Sheets-Sheet 2 /NVENTOR i vf6 of Y H. F.SIELAFF KNocKDowN GARBAGE RECEPTACLIE: MOLD Filed June 8, 1928 lll/ 5embodied in my invention.

Patented Feb. 14, 1933 PATENT OFFICE HERBERT F. SIELAFF, 0F CHICAGO,ILLINOIS KNOCKDOWN GARBAGE REGL?,IPILAGIILE MOLD Application led June 8,

first, to provide a mold, together with its complemental parts,

0 which :may be used over and over again in which to form concretegarbage receptacles; and, second, to provide a lnoclrdown mold which is,comparatively, easily and quickly assembled, and, just as easily andquickly 5 talren apart and removed from the molded form when ithasbecome sufficiently set.

Another object of the improvements, as embodied in my invention, is toprovide a molding device which shall resultl in the production of aproduct more economically, and more cihcicntly, than can be obtained byany other of the present methods.

These and other objects of my improvements will be more fully outlinedin the several views ot 'the accompanying drawings and more fullydescribed in the following specification, and more particularly pointedout in the appended claims.

In the several views illustrated in the accompanying drawings ispresented the improvements as embodied in my invention.

Fig. l is a plan view of my knock-down mold with certain parts brokenaway to show more clearly some of the important fea-tures Also, certainother parts are omitted here in order not to complicate the drawings. Y

Fig, 2 is a sectional view taken, substantially, on the vertical planeill-ir of Fig. l, and shows the molding device supported on a portableplatform.

3 is a sectional view taken, substantially, on the plane BB of Fig. 2,and :hows the means by which the outer walls of iilar halves of theinner and outer the mold are clamped together.

the two walls oi Serial No. 283,877.

Fig. 5 is a sectional view taken on the plane ot Fig. l, and shows themeans by which the two portions which form the inner contour 01"' thebottoi'n of the tacle are clamped together.

Fig. 6 is a sectional view taken on the plane E--E of Fig. 2, and showsthe means by which the two port-ions which form the inner contour of thebottom of the garbage receptacle are held down against the inner sidewalls of the mold.

Fig. 7 is a sectional view taken on the plane F-F of Fig. 2, and showshow the inner side walls and the inner front wall o1E the mold aresupport-ed by each other.

Fig. 8 is a sectional view taken on the plane Css-Gr of Fig. 2, andshows the flush joint made by the inner side walls and the inner frontwall of the mold.

Similar characters refer to similar parts throughout the several views.

Essentially, the molding device consists of eleven separate formsections, which, when assembled in their proper relation form the styleand shape of the inner and outer contour of my garbage receptacle, abovementioned.

In practice, it has been found best to mold the garbage receptacle withits top side down and its contour formed in the mold plate, 9, which isinclinedly support-ed on a portable platform, 10. Around the plate, 9,is a rectangular raised portion formed into a vertical wall, 11,againstwhich the outer walls, 12, of the mold are clamped by means ofthe clamping device, 13, indica-ted in Figures 2 and 3. The clampingdevice, 13, is made up of angle irons formed into two identical C shapedclamping members, 13', which are drawn toward each other against theouter side walls, l2', ci Jrhe mold, by means of the clamping screws13". It may be noted here, the plates, or sheet-s, which 'form the outerside and back walls, are made up of two symmetrical (one right hand, andone left hand) L-shaped sections; the shorter portion, l2, ot' the saidL sections forming the outer back wall oi the mold. The vertical edgesoi' said shorter'portions, 12, meet to form a leak proof joint, ll.Before drawing the said C clamps, 13', real tight against the sidewalls, 12', the front wall plate, 15, is put in place so that its topend, 15', is down and against the wall 11, of the mold plate 9, and, sothat the outer surface of which rests against spaced tie rods, 16. Now,by means of the said C clamping device, together with the clampingdevice turnbuckle, 17, the outer sides, front, and back wall moldplates, may be firmly clamped around the said wall, 11. At this point,also, the vertical join-t, 14 mayV be drawn firmly together by means ofa long channel bar or C clamp, 18, (shown in'light dash lines in Fig. 2)having several clamping screws, 19, therein, clamped over the anglebars, 20, which are secured on the outer surface ofthe walls, 12", nearthe vertical edge which form the joint, 14. vA leak proof joint betweenther sides, 15", of the front wall, 15, and the inside of the outer sideWalls, 12', may-now be made by drawing the said walls 12',A firmlyagainst the said sides v15" by means of the tie rods, 16.,

@n the mold plate, 9, which forms the contour of the top surface of thegarbage' receptacle, is a raised portion formed into a vertical wall,11',` which similar to, and parallel with, the said wall., 11. The saidwall, 11', being spaced a lilre distance .from the onter back. and outerside walls,12" and 12', respectivelyr It will be seen by referring toFig. 3, that the said wall, 11',`extends only as far as, and-joins with,the ends of the upright wall, 11", Vwhich is formed upwardly from themold plate, 9, to a distance slight-4 ly greater than the dis-"tancerbetween the parallel walls, 11 and 11'. Together with this wall 11", andthe inside wall mold plates, an opening is formed in the top of thegarbage receptacle, aboveV mentioned. nto the'ends-of the said wall',11", is formed a vertical rectangular notch, 21, which forms af'stop',and, as well, a lock, for the inner wall mold. plates which are insertedat this point.

To form the innei` bach and sir walls of the. garbage receptacle therep, 'fon-r separate form sections. `One pair, of which, is fitted to thesaid wall, 11'; tl "s pair, indicated as 22, together form the innerbaci: wall and, also, a portion of the side walls of the saidreceptacle. The back wall forinin-g portions, 22', of the said pair, 22,joined together atk their vertical edges, 22".

And, by means of a long channel bar or C.

clamp, 18, (also shown in'liglit dash lines 1n Fig. 2) together with itsclamping screws,

19 clamped over the angle bars, 23, whichV are secu-red, alternatelywith respect to each other on the inner surface of both the portions,22', near and parallel with the vertical edges, 22", a lealr proof jointmay be secured..4 The reason vof the alternate rel,.- tion of the saidangle bars, 23, is, that when knocking down the walls, 22, thel saidbars, 23, will swing by each other, permitting of `the easy removal ofthe said wall plates, 22.

The other pair of Vinner side wall forming sections, 24, each have avertical edge, 25, which matches with corresponding vertical edges, 26,of the inside wall mold plates, 22. Extending from each of the moldplates, 24, is a narrow parallel strip, 27, which snugly fits betweenthe vertical edge 26, and the rectangular notch, 21. As the said strip,27, is inserted between the said notch, 21, and the vertical edge, 26,it forces the mold plates, 22, back so that the wall lmold portion, 22',

ts snugly against the said wall, 11. ln order to cause the side wallmold portions, 22, and the strip 27 of the portions 24, to it closely tothe sides of the wall, 11', they are forced over against thefsaid wall,11', by means ofv a' .turnbuckle, 17', similar to that of 17, actuatedbetween stiff parallel bars, 28, which, not only force the said wallplates,

.22, and 24, over, but also, canse the corresponding edges,f25 and 26,to line up perfectly with each other, and, at the same time, form aleali proofy joint around the said oinvingedges. However, before thesaid mold plates, 22 and 24, can be forced outwardly to any greatextent,'which would cause them to become out of .line with each other,means must be provided which-will act, not only as ameansto prevent thesaid joining edges of trie plates, 22 and 24, from becoming ont of linewith each other,` but, also, as automatic limiting ganges or stops.v

By. referring to Figures 2 and 6, it will be seen that the mold plates,22 and 24, each have angle bars, 29f and 30, respectively, fixed alongtheir respective horizontal and dia-gonal edges, 31 and 32; and, alongthe edge, 33, of the wallmold portions, 22', is fixed an angle bar, 34.Spaced about equidistant each way from the said vertical edges, 25 and26, are adjustably secured, to the angle bars, 29 and 30, the saidlimiting gauges, or stops, 35, which are adapted to not onlyv act aslateral limitinggauges, or stops, for theinner side mold walls, 22 andV24, but, also, to act as clamping down means for the said receptaclefloor forming plates, 36 and 37 by engaging, when forced over,.trianglestrips, 38, which are fixed `to the said plates, 36 and 37 at the edgesthereof, as indicated in Figures 2 and 6. 'Also,before iinallyforcingthe Yside mold plates, 22 a-nd 24,. to their proper locked position bymeans of the turnbuckle, 17 and the bars, 28, the rear floor mold plate,36, is first securely clamped in place along the edges, 33'and 31, bymeansof the clamp, 39, and the clamp screw, 40, as is indicated inFigure 2; and next, the forward floor mold plate, 37,

is set in place on the edges, 32, by first insertiso diagonal surfacewill match up with the diagonal edges, 24', of the plates 24, and, so asto form a leak proof joint at, 42, where the said plates, 36, and 37,meet, as clearly indicated in Figures 1, 2 and 5.

Referring to Figures l, and 2, it will be seen that a portion of theside plates, 24, are bent toward each other, as at, 24, and the forwardportions thereof inserted through the opening, 41, so that theirparallel faces, 24, will be in contact with the vertical edges, 4l", ofthe said opening, 41. After all the said sections, which compose themold, have been securely locked in place by the several locking meansmentioned, a turnbuckle, 17 which is similar to that of 17, shown inFig. 2, is inserted between the said faces, 24', opposite the saidedges, 41, and, by means of the said turnbuckle, 17, the inner and outermold sections are rigidly secured to each other.

Around the said opening, 41, are secured narrow strips, 43, which moldsaA recess all around the clean out opening of the said re ceptacle. Thestrip, indicated as 43', has a series of holes, 44, and on the otherside of the said plate, l5, opposite the said strip, 43', is secured astrip, 45, through which, and also the plate 15, the holes, 44, areextended, and, over the said strip, 45, is secured a plain, or blindstrip, 46, which acts as a stop for the bolts, 47, which are inserted ineach of the said holes, 44, as indicated in Fig. 2.

IThe inner front wall and top mold plate, 48, which, together with thefront plate, 15, and the mold plate, 9, form the front and top of thesaid receptacle.

Referring to Figures 1, 7, and 8, it will be noted that the mold plates,24, are flanged as at 49. Between the edges, 49', of the said flanges,49, is secured the: said plate, 48. The said plate, 48, however, hassecured to it overhanging angle bars, 50, which are adapt-- ed tosupport the said plate, 48, so that the edges, 48', of the said plate,48, will coincide with the edges, 49, of the flanges, 49. The saidplate, 48, is also supported against the wall, 11, as indicated at 51,in Fig. 2. To further support the form plate, 48, and keep it inco-relation with the flanges, 49, latching devices are provided. Thesaid latching devices consist of clips, 52, secured to each of theflanges, 49, and clip engaging latch bars, 53, pivotally secured to theform plat-e, 48, as shown in Figures l, and 2. After the said formplate, 48, is properly located, it is firmly locked in place by means ofclamp bars, 54, and clamp screws, 55, threaded into a nut secured toeach of the inner side plates, 24, in the manner indicated in Figures 1,and 2.

In the mold plate, 9, are pockets, 5G, into which are supported links,57, while like the said bolts, 47, will be molded into the concrete.rlhe embedded bolts, 47, will protrude suihciently above the surface ofthe recess in the concrete to permit of two thicknesses of about No. 14ga. metalstrips and the nut accompanying the said bolt. Likewise, thesaid links, 57, will extend above the top sur'- face of the concrete topermit of their use as part of a door hinge.

One of the important features of my molding device is, that it moldsround corners, which are indicated in the several views as 58, both, onkthe exterior, as well as the interior, of the said concrete formedgarbage receptacle.

Referring to Figures 1, 2 and 3, and particularly to Fig. 2, it will beseen that a groove, 59, surrounds the walls 11', and the wall 11, inthesaid mold plate, 9. The purpose of this groove is to form a ridge aroundthe top opening of the said garbage receptacle.

1n order to reinforce the outer' and inner wall mold plates, angle-barstiffeners, 60, are suitably spaced as indicated in Figures 1, and 2.

Should any kleakage occur around the said wall 11', when pouring, sand,or dust, is thrown on the ledge, 61, and immediately the leak isstopped. And, should any leakage occur'at the horizontal edge, 31 andv32, sand, or dust, is thrown onto the flanges, 62 and 6.3,respectively, of the angle-bars, 29 and 30, which, also, immediatelystops the leak.

Having thus described my invention, it can be readily understood thatthe minor details of my construction may be altered in several wayswithout departing from the spirit of my invention, therefore, what Iclaim and desire to secure by Letters Patent is- 1. The combination inknock down molding devices of the class set forth, of a pair of combinedouter side and back wall mold plates detachably secured to each other,an outer front wall mold plate removably secured between the said outerside wall mold plates, and a pair of combined inner side and back wallmold plat-es detachably secured t0 each other, and a pair of inner sidewall mold plates detachablysecured to the side wall mold plate of thesaid combined inner wall mold plates, and, a combined inner front walland top mold plate removably secured between flanges of the said pair ofthe inner side wall mold plates, and an inclined outer top surface moldplate supporting each of the said mold plates, and, a pair of floor moldplates detachably secured to each other and supported by the inner wallmold sections, substantially as described and for the vpurposespecified.

2. The combination in knock down molding devices of the class set forth,of a set of outer side wall mold plates, an inclined outer top surfacemold plate supporting said plates, outer vertical walls raised from thesaid top surface mold plate and set in from the edges thereof to form asurrounding ledge, and

means to clamp said side Wall kmold plates, supported by the said ledge,snugly and securely to the said vertical Walls to secure, substantially,a leak proof joint; a set of inner side Wall mold plates supported bythe said inclined mold plate, and, inner vertical Walls spaced a uniformparallel distance in from the said outer vertical Wall and the said Wallset in from the edges of a rectangular opening inthe said top surfacemold plate to form aledge around the said opening, and the said vinnervertical Wall adapted to space the said gular opening in the mold plateand an inner Y(il) fillet-ed right Wall formed around three of its edgeswhich are in parallel relation With the back and side right Walls formedaround the back and sides of the said mold plate, and the clined sides,and fmeans to automatically secure said floor plates with 'saidinner setof molding forms when clamping said forms in place, substantially asdescribed and for the purpose specified. s

6. The ycombination in knoclrdoWn molding devices for molding garbagereceptacles,'com prising; an inner set of combined inner back and innersidewall molding forms disconnectably secured to one another andarranged to form the inner back Wall surface and the inner side Wallsurfaces of a garbage receptacle, a set of bent disconnectably securedhorizontal Hoor Ymold plates having inclined sides, said bent platesbeing adapted to form avhorizontal floor surface and upwardly inrclinedfloor surfaces and beveled corners When arranged to mold a garbagereceptacle form, triangular strips, or stops, secured along the edge .ofsaid inclined sides, and

means, comprising said strips, for automatically securing said floorplates with said Wall forms when clamping said Wall forms in pla-ce,substantiallyl in the manner described.

HERBERT F. SIELAFF.

said inner right Wall setin from the edges of v the opening to form asurroundingledge ;v an upright Wallforming one of the edges of saidepening and extending crossWise of the said mold plate and joining thesaid side right valls, and, a vertical notch in the ends of the saiduprightvvall joining the said right Walls; pockets formed in the saidmold plate, andeach of the said pockets adapted to support a linktherein, substantially as described and for the purpose specified.

l. The combination in knockdown molding devices for molding garbagereceptacles, ,coinprising; combined inner back and inner side Wall moldplates, said plates being.v respectively disconnectably secured With onean-V other, Vjoining portions of said back Wall plates being providedwith a seriesof spaced bars along theirjoining edges, the bars along oneof said edges being arranged in alternate relation with those arrangedalong the opposite edge of said joining portions, and means, comprisingthe arrangement of said 1 bars, whereby said inner Wall mold plates maybe readily removed from Within a molded form as composed in said moldingdevice.

, 5. The combination in knockdown molding devices for molding garbagereceptacles, comprising; a set of bent joining floor mold plates havinginclined sides, a set of combined back and side inner wall moldingcformsdisconnectably secured one With the other,` said plates along the edges@of their bent and in-

